Hands-On Object-Oriented Programming with Kotlin

Exception handling

Coroutines allow us to write asynchronous code in a sequential manner. This includes exception handling, and we can use the usual try {...} catch {...} block to catch exceptions.

The following example shows how to use it in practice:

fun main(args: Array<String>) = runBlocking<Unit> {    launch {        val result = try {            calculateValue()        } catch (exception: Exception) {            defaultValue        }        println(result)    }}val defaultValue = 1suspend fun calculateValue(): Int = withContext(DefaultDispatcher) { throw Exception() }